| Valor | Categoría | Casos | |
|---|---|---|---|
| 1 | Alcohol | 4 |
6.8%
|
| 2 | Drogas | 1 |
1.7%
|
| 3 | Ambos | 3 |
5.1%
|
| 4 | Ninguno | 51 |
86.4%
|
| Sysmiss | 260 |